Analogue Output from Numeric Value

[r.youden]

I have a VI which converts a digital signal into a speed based on the number of pulses per revolution. What I would like to do is now output that numeric value as a scaled 0-5V channel. I have tried to use the DAQassistant as with all of my other analogue outputs but it gives a buffer error. I know it can't be that hard to implement, can someone point me in the right direction...

Thanks,

Richard

[KoenR94]

Could you post your code? Is the buffer error that it's too small?

[r.youden]

Hi.

Yes the buffer is too small. Attached is my VI.

Thanks.

[KoenR94]

could you save it in 2011?

[r.youden]

I only have 2013 I'm afraid...

[RavensFan]

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@r.youden wrote:

I only have 2013 I'm afraid...

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File menu >> Save for Previous Version.

[r.youden]

Thanks 😉

Files are attached save under version 11.0/

[KoenR94]

Your samples per channel is too high.

Or you can configure your input buffer size, with use of the daqmx vi provided.

[r.youden]

How would I go about reducing the number of samples per channel?

Thaks for your help

[JamesKent]

Hi Youden,

Have you tried averaging your samples of frequency then outputting that as a hardware timed single point value to an analog output channel? This should do the I/O slow enough to not cause the DAQmx buffers to fill. 

You could try taking 1000 samples of pulse frequency from the counter, averaging that with the Mean VI, then outputting that to an analog output channel setup for hardware timed single point output.

Best Regards,